Greater spearwort: when and how to prune

Ranunculus lingua

Greater spearwort is best pruned in August and October.

Updated on 10 October 2026

Key facts
Pruning months	August and October
Flowering	June–August
Good for bees, butterflies and birds	Yes, for bees
Native to Belgium	Yes
Poisonous to people and pets	Yes, take care with children and pets

Greater spearwort: when to prune it?

It needs little pruning. In August cut off spent stems and escaped runners, and in October cut the plant back.

What else to prune in those months? August · October

Cut spent flower stems back to above a healthy leaf to keep the plant tidy.
Cut off runners that grow over the edge of the basket and pull them out of the bottom with their roots.
In October cut dead stems off above the water surface: they are hollow, and cutting them below water can make the base rot.
Wear gloves and put the clippings on the compost heap, never in a field.

There are 2 pruning periods a year: August and October. You don’t have to prune in every one.

Greater spearwort flowers in June–August, when it attracts bees.
If pruning falls during flowering, wait until it is over or leave part of the plant to flower, so bees and butterflies still benefit.
As a native plant, it feeds more insects than a non-native species.

Caution: The fresh sap is poisonous and can irritate the skin: wear gloves and wash your hands afterwards.

This guide is compiled from the Bladwijzer plant profile and pruning calendar.